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arXiv · 1804.07026

Constraints on a Spin-Dependent Exotic Interaction between Electrons with Single Electron Spin Quantum Sensors

Xing Rong·Man Jiao·Jianpei Geng·Bo Zhang·Tianyu Xie·Fazhan Shi·Chang-Kui Duan·Yi-Fu Cai·Jiangfeng Du
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Abstract

A new laboratory bound on the axial-vector mediated interaction between electron spins at micrometer scale is established with single nitrogen-vacancy (NV) centers in diamond. A single crystal of $p$-terphenyl doped pentacene-$d_{14}$ under laser pumping provides the source of polarized electron spins. Based on the measurement of polarization signal via nitrogen-vacancy centers, we set a constraint for the exotic electron-electron coupling $g_A^eg_A^e$, within the force range from 10 to 900 $μ$m. The obtained upper bound of the coupling at 500 $μ$m is $|g_A^eg_A^e / 4π\hbar c |\leq 1.8\times 10^{-19} $, which is one order of magnitude more stringent than a previous experiment. Our result shows that the NV center can be a promising platform for searching for new particles predicted by theories beyond the standard model.

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Xing Rong, Man Jiao, Jianpei Geng, Bo Zhang, Tianyu Xie, Fazhan Shi, Chang-Kui Duan, Yi-Fu Cai, Jiangfeng Du. 2018-08-15. Constraints on a Spin-Dependent Exotic Interaction between Electrons with Single Electron Spin Quantum Sensors. https://doi.org/10.1103/physrevlett.121.080402

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